Hii You are looking for Undergraduate in PU in computer science.  So PU take the admission according to following criteria. 

1. 75% of Marks from the PU CET 
2. 25% marks from the 10+2  exam or Qualifying exam (In percentage)
3. Over and above weightage of NCC, NSS, etc.

So for General cutoff is 15℅

For SC, ST, PWD cutoff is 10℅

Hope you doubt is cleared, still if you have any doubt then free to comment.